<?php

if (!defined('BASEPATH'))
    exit('No direct script access allowed');
/**
 * CodeIgniter
 *
 * An open source application development framework for PHP 5.1.6 or newer
 *
 * @package        CodeIgniter
 * @author        ExpressionEngine Dev Team
 * @copyright    Copyright (c) 2008 - 2011, EllisLab, Inc.
 * @license        http://codeigniter.com/user_guide/license.html
 * @link        http://codeigniter.com
 * @since        Version 1.0
 * @filesource
 */
// --------------------------------------------------------------------

/**
 * MySQL Result Class
 *
 * This class extends the parent result class: CI_DB_result
 *
 * @category    Database
 * @author        ExpressionEngine Dev Team
 * @link        http://codeigniter.com/user_guide/database/
 */
class CI_DB_mysql_result extends CI_DB_result {

    /**
     * Number of rows in the result set
     *
     * @access    public
     * @return    integer
     */
    function num_rows() {
        return @mysql_num_rows($this->result_id);
    }

    // --------------------------------------------------------------------

    /**
     * Number of fields in the result set
     *
     * @access    public
     * @return    integer
     */
    function num_fields() {
        return @mysql_num_fields($this->result_id);
    }

    // --------------------------------------------------------------------

    /**
     * Fetch Field Names
     *
     * Generates an array of column names
     *
     * @access    public
     * @return    array
     */
    function list_fields() {
        $field_names = array();
        while ($field = mysql_fetch_field($this->result_id)) {
            $field_names[] = $field->name;
        }

        return $field_names;
    }

    // --------------------------------------------------------------------

    /**
     * Field data
     *
     * Generates an array of objects containing field meta-data
     *
     * @access    public
     * @return    array
     */
    function field_data() {
        $retval = array();
        while ($field = mysql_fetch_object($this->result_id)) {
            preg_match('/([a-zA-Z]+)(\(\d+\))?/', $field->Type, $matches);

            $type = (array_key_exists(1, $matches)) ? $matches[1] : NULL;
            $length = (array_key_exists(2, $matches)) ? preg_replace('/[^\d]/', '', $matches[2]) : NULL;

            $F = new stdClass();
            $F->name = $field->Field;
            $F->type = $type;
            $F->default = $field->Default;
            $F->max_length = $length;
            $F->primary_key = ( $field->Key == 'PRI' ? 1 : 0 );

            $retval[] = $F;
        }

        return $retval;
    }

    // --------------------------------------------------------------------

    /**
     * Free the result
     *
     * @return    null
     */
    function free_result() {
        if (is_resource($this->result_id)) {
            mysql_free_result($this->result_id);
            $this->result_id = FALSE;
        }
    }

    // --------------------------------------------------------------------

    /**
     * Data Seek
     *
     * Moves the internal pointer to the desired offset.  We call
     * this internally before fetching results to make sure the
     * result set starts at zero
     *
     * @access    private
     * @return    array
     */
    function _data_seek($n = 0) {
        return mysql_data_seek($this->result_id, $n);
    }

    // --------------------------------------------------------------------

    /**
     * Result - associative array
     *
     * Returns the result set as an array
     *
     * @access    private
     * @return    array
     */
    function _fetch_assoc() {
        return mysql_fetch_assoc($this->result_id);
    }

    // --------------------------------------------------------------------

    /**
     * Result - object
     *
     * Returns the result set as an object
     *
     * @access    private
     * @return    object
     */
    function _fetch_object() {
        return mysql_fetch_object($this->result_id);
    }

}

/* End of file mysql_result.php */
/* Location: ./system/database/drivers/mysql/mysql_result.php */